SLUSDE4A
August 2019 – August 2019
TPS56C230
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
Efficiency vs Output Current Eco-mode
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
PWM Operation and D-CAP3 Control
7.3.2
Soft Start
7.3.3
Large Duty Operation
7.3.4
Power Good
7.3.5
Overcurrent Protection and Undervoltage Protection
7.3.6
Overvoltage Protection
7.3.7
Out-of-Bounds Operation
7.3.8
UVLO Protection
7.3.9
Output Voltage Discharge
7.3.10
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Light Load Operation
7.4.2
Eco-mode Control
7.4.3
Force CCM
7.4.4
Mode Selection
7.4.5
Standby Operation
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Output Voltage Set Point
8.2.2.3
MODE Selection
8.2.2.4
Inductor Selection
8.2.2.5
Output Capacitor Selection
8.2.2.6
Input Capacitor Selection
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Development Support
11.1.2.1
Custom Design With WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
6.6
Typical Characteristics
V
EN
= 5 V
Figure 1.
Supply Current vs Junction Temperature
1.
Figure 3.
Feedback Voltage vs Junction Temperature
1.
Figure 5.
Enable Off Voltage vs Junction Temperature
1.
Figure 7.
Low-Side R
DS(on)
vs Junction Temperature
1.
Figure 9.
UVP Threshold vs Junction Temperature
1.
Figure 11.
Valley Current Limit vs Junction Temperature
1.
Figure 13.
Efficiency vs Load Current, Eco-mode
1.
Figure 15.
Switching Frequency vs Load Current, Eco-mode
V
EN
= 0 V
Figure 2.
Shutdown Current vs Temperature
1.
Figure 4.
Enable On Voltage vs Junction Temperature
1.
Figure 6.
High-Side R
DS
(on) vs Junction Temperature
1.
Figure 8.
OVP Threshold vs Junction Temperature
1.
Figure 10.
Discharge Resistor vs Junction Temperature
1.
Figure 12.
Soft-Start Time vs Junction Temperature
1.
Figure 14.
Efficiency vs Load Current, FCCM
1.
Figure 16.
Switching Frequency vs Load Current, FCCM